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Finding the Fourth Proportional to 763,957,256.80, 1,145,935,885.20 and 763,957,256.80

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Solution

The fourth proportional to 763,957,256.80, 1,145,935,885.20 and 763,957,256.80 is: 1,145,935,885.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    763,957,256.80 : 1,145,935,885.20 = 763,957,256.80 : x
  2. Step 2: Convert to fraction form
    763,957,256.80/1,145,935,885.20 = 763,957,256.80/x
  3. Step 3: Cross multiply
    763,957,256.80x = 1,145,935,885.20 × 763,957,256.80
  4. Step 4: Simplify right side
    763,957,256.80x = 875,446,035,326,071,680
  5. Step 5: Solve for x
    x = 875,446,035,326,071,680/763,957,256.80
  6. Step 6: Final answer
    x = 1,145,935,885.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.